This machine is easy to operate, the structure simple and the cost is low. After finishing the movement the debugging is to be extremely stable it can achieve the practical level and steps onto the market.

Conclusion: Results show that the method had reached the practical level because its high sensitivity and specifty and also proved a new useful tool for the surveillance of filariasis in the late stage control.

Plastic crystals are promising materials to be used to prepare ambient temperature all-solid-state electrolyte with high conductivity for lithium batteries. Lithium ion conductivity of plastic crystals reaches the practical level in excess of 10~(-3)S cm~(-1).

When Ma_0=0.7,α=-2°～8°,β=0°～2°, the total pressure recovery coefficient ranges from 0.920 to 0.952 and the circumferential total pressure distortion index ranges from 1.142% to 2.237%, which shows clearly that the performance of the submerged inlet is acceptable.

And the absorption characteristics were simulated. Three-layer structure with the thickness of 1.66mm and the surface density of 4.685kg/m~2 was prepared and its microwave absorbing properties were measured by a net work analyzer from 2GHz to 18GHz.

This paper presents a new algorithm for determing transfer function of SI/SO linear system from its frequency response data. In comparison with other methods proposed by existed references, the algorithm has following features: ( 1 ) The transfer function model is assumed to have the structure of ratio of two complex polynomials with a time delay factor, which has wider applicability; ( 2 ) A relaxing algorithm is used to estimate the time delay parameter as well as the coefficients of polynomials; ( 3 ) The...

This paper presents a new algorithm for determing transfer function of SI/SO linear system from its frequency response data. In comparison with other methods proposed by existed references, the algorithm has following features: ( 1 ) The transfer function model is assumed to have the structure of ratio of two complex polynomials with a time delay factor, which has wider applicability; ( 2 ) A relaxing algorithm is used to estimate the time delay parameter as well as the coefficients of polynomials; ( 3 ) The orders of polynomials are determined of itself in calculating program by analysing the distribution of poles and zeros of the model; ( 4 ) The stability of algorithm has been strengthened so that the program is more available. Four examples are illustrated in the paper and compared with results obtained by means of other methods in references.

In this paper, the basic principles of measuring the horizontal displacement by a laser collimator is introduced, the causes of measurement error are investigated and measures to reduce it are proposed. Besides, the results of field tests are presented.

An 18-bit analog-to-digital converter has been designed that uses the principle of oversampling rather than the successive-approximation technique of most converters. The design employs a two-stage digital filter/decimator to reduce the sampling rate. Unusual digital filter structures are used to reduce the computation rate to a practical level. Extension to 19 bits and beyond is discussed.